Jamming and unjamming transition of oil-in-water emulsions under continuous temperature change

To analyze the jamming and unjamming transition of oil-in-water emulsions under continuous temperature change, we simulated an emulsion system whose critical volume fraction was 0.3, which was validated with experimental results under oscillatory shear stress. In addition, we calculated the elastic modulus using the phase lag between strain and stress. Through heating and cooling, the emulsion experienced unjamming and jamming. A phenomenon—which is when the elastic modulus does not reach the expected value at the isothermal system—occurred when the emulsion system was cooled. We determined that this phenomenon was caused by the frequency being faster than the relaxation of the deformed droplets. We justified the relation between the frequency and relaxation by simulating the frequency dependency of the difference between the elastic modulus when cooled and the expected value at the same temperature.     

Globalization,Regionalism and Reconciliation in South Korea's Asian Games

The Asian Games have exercised an influence over the Asian region which has been strong enough to change the paradigms of host countries having substantial socio-cultural effects on various elements of relationships such as geopolitical diplomatic relations in the region. South Korea has confidently hosted three Asian Games in the last two decades, the 1986 Seoul, 2002 Busan and 2014 Incheon Games. In this study, an investigation of the socio-cultural impacts of the Asian Games held in South Korea in the last two decades is carried out. The focuses of the study are the aspects of globalization, regionalism and reconciliation featured through the three Games. The outcomes of the study may contribute to the understanding of the role of mega sports events in promoting globalization of society and in intertwining with regional states. The Asian Games, as witnessed, which are held while maintaining the motto of the Olympics within Asia, will not only promote the globalization of host countries and cities in the future, but also it will contribute to improving diplomatic relations with neighbouring countries. These games are also predicted to help relieve political tension in the Asia-Pacific region, including the Korean Peninsula. However, as the effects of hosting mega sports events are largely concentrated on the development of their host countries and cities, these events also have the potential to become the seeds of regional conflicts or disputes by creating further competition or a sense of alarm.     

Estimation fusion of nonlinear cost functions with application to multisensory Kalman filtering

This paper focuses on four fusion algorithms for the estimation of nonlinear cost function (NCF) in a multisensory environment. In multisensory filtering and control problems, NCF represents a nonlinear multivariate functional of state variables, which can indicate useful information of the target systems for automatic control. To estimate the NCF using multisensory information, we propose one centralized and three decentralized estimation fusion algorithms. For multivariate polynomial NCFs, we propose a simple closed-form computation procedure. For general NCFs, the most popular procedure for the evaluation of their estimates is based on the unscented transformation. The effectiveness and estimation accuracy of the proposed fusion algorithms are demonstrated with theoretical and numerical examples.     

Teacher effect change model: latent variable regression 5-level hierarchical model

Asia Pacific Education Review - This paper proposes a teacher effect change model in the form of a latent variable regression 5-level hierarchical model (LVR-HM5). Using multiple years of student...     

Metalinguistic skills and vocabulary knowledge in Chinese (L1) and English (L2)

How are metalinguistic skills associated with vocabulary knowledge in languages with contrasting phonological and morphological properties? To address this question, tasks of phonological awareness and morphological awareness, other reasoning and literacy-related skills, and measures of vocabulary knowledge in Chinese and English, were administered to 217 Hong Kong Chinese kindergarten children learning English as a second language. Syllable-level awareness but not phoneme onset awareness was strongly associated with Chinese vocabulary knowledge; phoneme onset awareness but not syllable awareness was associated with English vocabulary knowledge. In hierarchical regression equations, phonological awareness in English explained unique variance in English vocabulary knowledge but not in Chinese vocabulary knowledge. In contrast, measures of morphological awareness, which were strongly associated with syllable awareness, uniquely explained 13% of the variance in Chinese vocabulary knowledge apart from all other measures included but were not uniquely associated with English vocabulary knowledge. Findings highlight the strong overlap across phonological and morphological awareness in Chinese and the different associations of each to vocabulary acquisition in Chinese (L1) and English (L2) languages.     

Incremental cue phrase learning and bootstrapping method for causality extraction using cue phrase and word pair probabilities

This work aims to extract possible causal relations that exist between noun phrases. Some causal relations are manifested by lexical patterns like causal verbs and their sub-categorization. We use lexical patterns as a filter to find causality candidates and we transfer the causality extraction problem to the binary classification. To solve the problem, we introduce probabilities for word pair and concept pair that could be part of causal noun phrase pairs. We also use the cue phrase probability that could be a causality pattern. These probabilities are learned from the raw corpus in an unsupervised manner. With this probabilistic model, we increase both precision and recall. Our causality extraction shows an F-score of 77.37%, which is an improvement of 21.14 percentage points over the baseline model. The long distance causal relation is extracted with the binary tree-styled cue phrase. We propose an incremental cue phrase learning method based on the cue phrase confidence score that was measured after each causal classifier learning step. A better recall of 15.37 percentage points is acquired after the cue phrase learning.     

The Impact of No-Loan Policies on Student Economic Diversity at Public Colleges and Universities

To improve college access for low-income students, an increasing number of public colleges and universities have implemented no-loan policies, where student loans are replaced with institutional grant aid that does not require repayment. Using detailed income measures provided by Mobility Report Card data, this study examines the effect of no-loan policies on student economic diversity at public 4-year institutions. Using a difference-in-differences design and the synthetic control method, we found that the adoption of no-loan policies at public institutions increased enrollment shares of low-income students (bottom two family income quintiles). However, the increase was minimal for students from the lowest income quintile, particularly at the most selective institutions. Our findings suggest that although no-loan policies may help improve affordability at public colleges and universities, further efforts are needed to address underrepresentation of students from the lowest part of the income distribution.

     

Situated cognition and learning environments: Roles,structures, and implications for design

Situated cognition has emerged as a powerful perspective in providing meaningful learning and promoting the transfer of knowledge to real-life situations. While considerable interest has been generated in situated learning environments, few guidelines exist related to their design. The purpose of this paper is to examine the theoretical underpinnings of situated cognition and to derive implications for the design of situated learning environments. The conceptual framework centers on four basic issues: the role of context, the role of content, the role of facilitation, and the role of assessment.